Electrical signaling apparatus.



No. s29,29a. Patented luly l8, I899. c. E. KELLS, 1n.

ELECTRICAL SIGNALING APPARATUS.

(Application filed Oct. 16, 1898.) (No Model.)

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UNITED STATES PATENT Orricn.

CHARLES EDMUND KELLS, JRI, OF NEIV ORLEANS, LOUISIANA,'ASSIGNOR. OE ONE-HALF TO LOUIS II. FAIRCIIILD, OF SAME PLACE.

ELECTRICAL SIGNALING APPARATUS.

SPECIFICATION forming part of Letters Patent No. 629,298, dated July 18, 1899 Application filed October 15, 1898. erial No. 693,663. (No model.)

To ctZZ whom it may concern:

Be it known that I, CHARLES EDMUND KELLS, J r., a citizen of the United States, residing at New Orleans, in the parish of Orleans, State of Louisiana, have invented certain new and useful Improvements in Electrical Signaling Apparatus, of which the following is a specification.

My invention relates particularly to sign aling or calling, as in telephone systems, by means of a hand-operated magneto-generator and an ordinary call-bell adapted to be operated by the current therefrom.

The object of my invention is to provide an improved organization wherein the call-hell associated at a signaling-station with a magneto generator is automatically out out, shunted, or placed in a non-operative relation to the calling-circuit when the generator is operated to send a calling-current to actuate a bell at a distant station, but which normally is included in the circuit, so as to be operated by a calling-current arriving from a distant station.

In my organization the bell of the person making the call remains silent when the calling-current is sent out from the generator. In the organization herein described and illustrated the call-bell associated with a generator at a station is cut outof the calling-circuit. I have also shown a switch mechanism to eliect this object, which acts automatically upon the operation of the magneto. The particular form in which this switch mechanism is embodied is that of a collapsible handle connected with the arbor of the magneto.

In the accompanying drawings, Figure 1 is an elevation showing an ordinary magneto modified and equipped according to my invention, a call-bell associated therewith, and a calling-circuit leading to a distant station; Fig. 2, a longitudinal section, on an enlarged scale, through the handle or crank and part of the arbor of a 1n agneto-generator constructed according to my invention and showing also the circuit connections. Fig. 3 is an end view of the butt or' handle of the generatorcrank.

X and Y indicate, respectively, stations connected by the calling-circuit; but the complete calling organization is shown at station X only.

A is a magnetogenerator, which may be of any ordinary construction. B is its driving arbor or shaft, from which the armature-shaft is driven, as shown, or otherwise, while B is the crank. One pole of the generator is grounded or connected to the main-line return-conductor if a metallic circuit be used.

C D E are three insulated contact-rings on the arbor of the generator, and upon them respectively bear the insulated contact-fingers c d e. The central finger d is connected by main line L with the distant station. The finger c is connected with the binding-post I, which is connected with the other pole of the generator, and the finger c is connected through the call-bell G B with the bindingpost I. which the contact-rings O D E are mounted is preferably made hollow, as is also the crank connected therewith. The crank pin has upon its end an insulated cap or sleeve E,

.which' carries three contact-rings O D The rings 0 and C are connected by an insulated conductor passing through the hollow crank,and the rings D D and E E are similarly connected. A sleeve G, revolving loosely upon the crank-pin, carries two pivoted segmental pieces H K, which form the handle to be grasped by the operator. They are norm ally thrown outwardly by springs interposed between them and the sleeve G. Between one of the segmental parts II K and the sleeve and crank-pin the spring, which is marked L, carries an insulated contact-plate M, which normally bridges the contact-rings E D. When, however, the pivoted collapsible parts II K are grasped and pressed inwardly, the spring L, which is of suitable shape and dimensions to permit the operation, carries the contact M out of engagement with the ring E and causes it to bridge the rings 0 D. The circuits may nowreadily be traced. With the parts in a IVhen,

The part of the arbor or shaft upon therefore, the signaling-current arrives, the call-bell responds. If the operator at station X wishes to send out a calling-signal in operating the generator, he grasps and compresses the handle, and hence during the operation of the generator the contact M leaves the ring E and bridges the rings 0 D. The circuit is then from the generatorsay, from binding-post I through contact-finger a, ring 0, ring 0, contact M, ring D to ring D, contactfinger d, and thence to line. The branch containing the call-bell is then disconnected, being open at the ring E.

I claim as my invention 1. The combinationofamagneto-generator, a signaling-circuit connecting the magneto with a distant station, a signal-bell included in the circuit when the magneto is at rest, and devices within the handle of the magneto for cutting out the signal-bell from the circuit whenever the magneto is operated to send a signal to a distant station.

2. The combination ofamagneto-generator, contact-fingers haying electrical connections with the armature of the generator, a conductor-connecting one of said contact-fingers with the main-line circuit, another conductor connecting the armature with a contact finger of switch mechanism, a third conductor connecting said last-mentioned finger with a signalbell, a conductor connecting the signal-bell with a second contact-finger of the switch mechanism, a third contactfinger of the switch mechanism connected with the mainline circuit, and means operated by the generator for changing the current through the contact-fingers of the switch mechanism.

The combination ofamagnetogenerator, a contactfinger having electrical connection with the armature thereof and connected with the main-line circuit, three contact-fingers bearing 011 the rotary shaft which turns the armature of the magneto, another contactdinger bearing on the armature of the generator, and electrically connected with one of said contact-fingers on the operating-shaft of the generator, a signal-bell electrically connected with saidlast-mentioned contact-finger which bears on the armature-shaft, and also connected with a second one ofthe contact-fingers which bears on the operating-shaft,a third contact-finger bearing on the operating-shaft,and connected with the mainline, and means carried by the operating-shaft for shifting the current from one pair of fingers to another pair, the organization being such that the signaling-current is always through the armature of the magneto and includes the signalbell when the magneto is at rest,but the signal-bell is cut out when the magneto is operated.

The combination of a magnetogenerator, an operatingshaft for the armature thereof, contact-fingers bearing on insulated contacts on the shaft, contact-pieces in the handle of the operating-shaft, a shifting contact-maker for changing the circuit through the contacts, a signal-bell included in the circuit when the magneto is at rest, but cut out of the circuit when the magneto is operated.

5. The combination of a magneto-generator, a call-bell. associated therewith, circuit connections by which the call-hell is normally included in the circuit of the generator, a collapsible handle for the operation of the generator and switch devices operated when the handle is collapsed by the grasp of the operator to automatically throw the call-bell out of operative relation to the circuitof the generator.

In testimony whereof I have hereunto subscribed my name.

CHARLES EDMUND h'llhLS. JR.

\Vitnesses:

\V. II. Gums, l). G. Tamnus. 

